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Reply to "High Vibration on bearing #2 and #3 on gas Turbine frame 9E (100 MW)"

Hi

We have same problem in GE frame 9 

Load variation vib in BRG#2&3

 vibration signature analysis is like misalignment 1X,2X,...

also we have high vibration near 25 mm/s in BRG#1 at critical speed in running the unit and in BRG#3 in shutting down the unit. 

We suspect to misalignment of the bearing due to casing slippage

Please help us that other reasons for this problem. Our thinking about source of vibration is right.

thank you

 

 

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